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NetworkThreadFactory.java
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NetworkThreadFactory.java
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/*
* Copyright 2016 Ross Nicoll.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.libdohj.cate.util;
import java.util.concurrent.ThreadFactory;
import org.bitcoinj.core.Context;
/**
* Thread factory for generating threads for a single network. Handles propagating
* the bitcoinj Context on to each thread. Also adds an inner class of the main
* controller as the uncaught exception handler.
*
* In comparison to {@link org.bitcoinj.utils.ContextPropagatingThreadFactory this
* takes in a context to propagate, rather than inferring it from the current
* context.
*
* @author Ross Nicoll
*/
public class NetworkThreadFactory implements ThreadFactory {
private final Context context;
private final ThreadGroup group;
private int threadCount = 0;
private Thread.UncaughtExceptionHandler uncaughtExceptionHandler;
/**
* @param context context to propagate to all threads created by this factory.
*/
public NetworkThreadFactory(final Context context) {
assert context != null;
this.context = context;
this.group = new ThreadGroup(context.getParams().getId() + " threads");
this.uncaughtExceptionHandler = null;
}
@Override
public Thread newThread(Runnable r) {
final String name = context.getParams().getId() + " worker #"
+ (++threadCount);
final Thread thread = new Thread(group, () -> {
Context.propagate(context);
r.run();
}, name);
if (uncaughtExceptionHandler != null) {
thread.setUncaughtExceptionHandler(uncaughtExceptionHandler);
}
thread.setDaemon(true);
return thread;
}
/**
* @return the group
*/
public ThreadGroup getGroup() {
return group;
}
public Thread.UncaughtExceptionHandler getUncaughtExceptionHandler() {
return this.uncaughtExceptionHandler;
}
public void setUncaughtExceptionHandler(Thread.UncaughtExceptionHandler newUncaughtExceptionHandler) {
this.uncaughtExceptionHandler = newUncaughtExceptionHandler;
}
}